Christopher asked me while eating breakfast "Mommy why do I see bumps on your arms" now I don't really have scrawny arms but the bones at my wrists are very prominent, it might be that my wrists are the size of a 4 year olds, don't know. Well after trying to explain bones to him I got an idea to just draw them and explain every thing as I drew. It worked he got every thing he was wanting to know and I got to draw this picture.
Anatomy over Breakfast Arm Drawing
Now I did not major in science but this is about the exstent of what a four year can understand.